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Cash, Cash Equivalents and Short-Term Investments - Schedule of cash, cash equivalents and short-term investments (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 24, 2022	Jun. 25, 2022
Cash and Cash Equivalents [Line Items]
Amortized Cost	$ 46.1	$ 54.0
Unrealized Gain (Loss) on Investments	1.9	1.8
Corporate Debt Securities [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	38.2	43.7
Unrealized Gain (Loss) on Investments	(2.0)	(1.9)
Assets, Fair Value Adjustment	36.2	41.8
Cash [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	418.8	811.9
Unrealized Gain (Loss) on Investments
Assets, Fair Value Adjustment	418.8	811.9
Money Market Funds [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	390.9	12.1
Unrealized Gain (Loss) on Investments
Assets, Fair Value Adjustment	390.9	12.1
Certificates of Deposit [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	38.1	2.4
Unrealized Gain (Loss) on Investments
Assets, Fair Value Adjustment	38.1	2.4
Certificate of Deposit [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	2.0
US Treasury Securities [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	20.0
Assets, Fair Value Adjustment	20.0
Municipal Bonds [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	5.9	7.9
Unrealized Gain (Loss) on Investments	(0.1)	(0.1)
Assets, Fair Value Adjustment	5.8	7.8
Cash and Cash Equivalents [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	867.8	824.0
Unrealized Gain (Loss) on Investments
Assets, Fair Value Adjustment	867.8	824.0
Short-Term Investments [Member]
Cash and Cash Equivalents [Line Items]
Unrealized Gain (Loss) on Investments	(2.1)	(2.0)
Assets, Fair Value Adjustment	44.0	$ 52.0
Short-Term Investments [Member] | Certificates of Deposit [Member]
Cash and Cash Equivalents [Line Items]
Unrealized Gain (Loss) on Investments
Assets, Fair Value Adjustment	$ 2.0

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